Y Tywydd Dyfroedd Gyda'r Glannau

Gosodiadau
Iaith

Mae'r cynnwys hwn ar gael yn Saesneg yn unig.

Summary

The British Isles will lie in a northwesterly airflow during Thursday, although this will gradually give way to a declining ridge of high pressure which will encroach from the west.

* Wind or gale warning issued

  1. From Cape Wrath to Rattray Head including Orkney * warning

    From Cape Wrath to Rattray Head including Orkney

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      West or northwest 5 to 7 veering north 4 or 5, decreasing 3 at times later.
    • Sea State

      Moderate or rough at first except in Moray Firth, otherwise slight or moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate at first.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      North 3 or 4 becoming variable 3 or less, then becoming southeast 4 or 5 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  2. Rattray Head to Berwick on Tweed * warning

    Rattray Head to Berwick on Tweed

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      Westerly or northwesterly 4 increasing 5 or 6, occasionally 7 at first in north, then veering northerly 4 or 5 later.
    • Sea State

      Slight or moderate, becoming rough for a time near Rattray Head.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate at first.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      North or northwest 3 or 4, occasionally 5 at first, becoming variable 3 or less, then becoming southeast 4 later.
    • Sea State

      Slight or moderate, becoming slight.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  3. Berwick on Tweed to Whitby * warning

    Berwick on Tweed to Whitby

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      West or northwest 3 or 4 increasing 5 or 6, then veering north 4 or 5 later.
    • Sea State

      Moderate.
    • Weather

      Rain or showers.
    • Visibility

      Good, occasionally moderate at first.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      North 4 or 5 becoming variable 3 or less, then becoming south 3 or 4 later.
    • Sea State

      Moderate becoming slight.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  4. Whitby to Gibraltar Point * warning

    Whitby to Gibraltar Point

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      West or northwest 4 or 5, occasionally 3 at first, then increasing 6 at times.
    • Sea State

      Moderate, occasionally slight in south.
    • Weather

      Fair then rain or showers.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwest 4 or 5 veering north 3 or 4, then becoming variable 3 or less later.
    • Sea State

      Moderate becoming slight.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  5. Gibraltar Point to North Foreland * warning

    Gibraltar Point to North Foreland

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      Westerly or northwesterly 4 or 5, occasionally 6 in north.
    • Sea State

      Slight, occasionally moderate in north.
    • Weather

      Showers, then rain for a time later.
    • Visibility

      Good, occasionally poor later.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwesterly 4 or 5 veering northerly 3 or 4, then becoming variable 3 or less later.
    • Sea State

      Slight or moderate becoming smooth or slight.
    • Weather

      Showers, becoming fair later.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  6. North Foreland to Selsey Bill

    North Foreland to Selsey Bill

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    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      Northerly backing westerly or northwesterly, 4 or 5, but becoming variable 3 for a time.
    • Sea State

      Slight.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate later.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwesterly 4 or 5 becoming variable 3 or 4, occasionally 2 later.
    • Sea State

      Smooth or slight.
    • Weather

      Showers, becoming fair later.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  7. Selsey Bill to Lyme Regis

    Selsey Bill to Lyme Regis

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    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      North 3 or 4, occasionally 2 at first, backing west or northwest 4 or 5.
    • Sea State

      Smooth or slight.
    • Weather

      Showers later.
    • Visibility

      Good.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwest 4 or 5 becoming variable 3 or less, occasionally 4 later.
    • Sea State

      Smooth or slight.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  8. Lyme Regis to Lands End including the Isles of Scilly

    Lyme Regis to Lands End including the Isles of Scilly

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    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      North backing northwest 3 or 4, increasing 5 at times, but occasionally variable 2 at first.
    • Sea State

      Slight, occasionally smooth in east.
    • Weather

      Showers.
    • Visibility

      Good.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      North or northwest 3 or 4, occasionally 5 at first, then becoming variable 3 or less.
    • Sea State

      Smooth or slight.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  9. Lands End to St Davids Head including the Bristol Channel

    Lands End to St Davids Head including the Bristol Channel

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    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      North or northeast 3 or 4 backing west or northwest 4 or 5.
    • Sea State

      Slight, occasionally moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      West or northwest 3 or 4, occasionally 5 at first, then becoming variable later.
    • Sea State

      Smooth or slight, occasionally moderate at first.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  10. St Davids Head to Great Ormes Head, including St Georges Channel * warning

    St Davids Head to Great Ormes Head, including St Georges Channel

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      Northerly 3 or 4 becoming variable 3 or less, then becoming northwesterly 4 or 5, occasionally 6 later in north.
    • Sea State

      Smooth or slight becoming slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwest 4 or 5 becoming variable 3 or less, then becoming south or southwest 3 or 4 later.
    • Sea State

      Slight or moderate becoming smooth or slight.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  11. Great Ormes Head to the Mull of Galloway * warning

    Great Ormes Head to the Mull of Galloway

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      Northwest 3 or 4 increasing 5 or 6.
    • Sea State

      Smooth or slight becoming slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate later.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwest 5 or 6 becoming variable 3 or less, then becoming south or southwest 3 or 4 later.
    • Sea State

      Slight or moderate becoming smooth or slight.
    • Weather

      Mainly fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  12. Isle of Man * warning

    Isle of Man

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      Northwest 3 or 4 increasing 5 or 6.
    • Sea State

      Slight becoming moderate.
    • Weather

      Rain or showers for a time.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwest 5 or 6 becoming variable 3 or less, then becoming south 3 or 4 later.
    • Sea State

      Moderate, becoming smooth or slight.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  13. Lough Foyle to Carlingford Lough * warning

    Lough Foyle to Carlingford Lough

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      Northwesterly 4 or 5, occasionally 3 at first, then increasing 6 at times in North Channel.
    • Sea State

      Slight or moderate, occasionally smooth at first in southeast.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwest 4 or 5 becoming variable 3 or less, then becoming south 4 later.
    • Sea State

      Slight or moderate, becoming smooth or slight for a time.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  14. The Mull of Galloway to Mull of Kintyre including the Firth of Clyde and the North Channel * warning

    The Mull of Galloway to Mull of Kintyre including the Firth of Clyde and the North Channel

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      Northwest 3 or 4 increasing 5 or 6, then decreasing 4 again later in Firth of Clyde.
    • Sea State

      Smooth or slight, becoming slight or moderate until later.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwest 4 or 5 becoming variable 3 or less, then becoming south 4 or 5 later.
    • Sea State

      Smooth or slight, becoming slight or moderate later.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  15. Mull of Kintyre to Ardnamurchan Point * warning

    Mull of Kintyre to Ardnamurchan Point

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      Northwest 3 or 4 increasing 5 or 6, then decreasing 4 again later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwest 4 becoming variable 3 or less, then becoming south 4 or 5 later.
    • Sea State

      Smooth or slight, becoming moderate later.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  16. The Minch * warning

    The Minch

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      North or northwest 4 or 5, increasing 6 at times, then becoming variable 3 or 4 later.
    • Sea State

      Slight or moderate.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Variable becoming southwest 3 or 4, occasionally 2 at first, then backing south 4 or 5 later.
    • Sea State

      Smooth or slight becoming slight or moderate.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  17. Ardnamurchan Point to Cape Wrath including the Outer Hebrides * warning

    Ardnamurchan Point to Cape Wrath including the Outer Hebrides

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      North or northwest 5 or 6, occasionally 4 at first, then decreasing 3 or 4 later.
    • Sea State

      Slight or moderate in south, moderate or rough in north.
    • Weather

      Showers.
    • Visibility

      Good, occasionally moderate.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      Northwest backing southwest 3 or 4, occasionally 2 at first, then backing south 4 or 5 later.
    • Sea State

      Slight or moderate, becoming rough later to the west of the Outer Hebrides.
    • Weather

      Showers then fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  18. Shetland Isles * warning

    Shetland Isles

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      Northwest 5 to 7 veering north or northeast 4 or 5.
    • Sea State

      Moderate or rough, becoming moderate later.
    • Weather

      Rain or showers then fair.
    • Visibility

      Good, occasionally moderate at first.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      --
    • Sea State

      --
    • Weather

      --
    • Visibility

      --

    Issued at 00:00 UTC on Thursday 27th Apr

    For coastal areas up to 60 nautical miles from Lerwick, Shetland

    Gale Warnings in operation for Sea Area Fair Isle: Nil.

    00:00 UTC Thu 27th Apr – 11:59 UTC Thu 27th Apr

    • Wind

      Northwest, veering north later, 5 to 7.
    • Sea State

      Moderate or rough.
    • Weather

      Rain or showers, then becoming fair later.
    • Visibility

      Good, occasionally moderate.

    12:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      North or northeast 4 or 5, occasionally 6 at first.
    • Sea State

      Rough at first in west and north, otherwise moderate.
    • Weather

      Fair.
    • Visibility

      Good.

    Issued at 00:00 UTC on Thursday 27th Apr

  19. The Channel Islands * warning

    The Channel Islands

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    Strong wind warning

    00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

    • Wind

      North or northeast 3 to 5, occasionally 6 with some gusts to 35kt near showers, decreasing 2 to 4 after dawn, backing northwest around midday, then increasing 4 or 5 in the evening.
    • Sea State

      Mainly smooth or slight, but locally moderate in the north of the area at first and again in the evening.
    • Weather

      Isolated rain or hail showers, with a risk of thunder, dying out during the morning, patchy light rain in the north of the area by midnight.
    • Visibility

      Good, occasionally moderate in showers.

    00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

    • Wind

      North or northwest 4 or 5, decreasing 2 to 4 by midday, becoming variable 1 to 3 in the afternoon.
    • Sea State

      Slight or moderate, decreasing smooth or slight by midday.
    • Weather

      Patchy light rain at first.
    • Visibility

      Mainly good.

    Issued at 00:00 UTC on Thursday 27th Apr

Mull of Kintyre to Ardnamurchan Point

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Strong wind warning

00:00 UTC Thu 27th Apr – 23:59 UTC Thu 27th Apr

  • Wind

    Northwest 3 or 4 increasing 5 or 6, then decreasing 4 again later.
  • Sea State

    Slight or moderate.
  • Weather

    Showers.
  • Visibility

    Good, occasionally moderate.

00:00 UTC Fri 28th Apr – 23:59 UTC Fri 28th Apr

  • Wind

    Northwest 4 becoming variable 3 or less, then becoming south 4 or 5 later.
  • Sea State

    Smooth or slight, becoming moderate later.
  • Weather

    Showers then fair.
  • Visibility

    Good.

Issued at 00:00 UTC on Thursday 27th Apr